Warren s



(No-Model.)

W. S. JOHNSON. WALL PLATE AND PILL GONNLGTION.

Patented Sept. 1, 1896.

Nrrnn STATES PATENT "rrrcn,

VARREN S. JOHNSON, OF MILWAUKEE, IVISCONSIN, ASSIGNOR TO TIIE JOHNSON ELECTRIC SERVICE COMPANY, OF SAME PLACE.

WALL-PLATE AND PIPE CONNECTION.'

SPECIFICATION forming part of Letters Patent No. 567,029, dated September 1, 1896. Application filed March 28, 1896. Serial No. 585,293. (No model.)

To all whom it may concern,.-

Be it known that I, WARREN S. JOHNSON, of Milwaukee, in the county of Milwaukee and State of lVisconsin, have invented certain new and useful Improvements in VVall-Plates and Pipe Connections; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying` drawings, and to the letters of reference marked thereon, which form a part of this specification.

The main objects of my invention are to facilitate the attachment and detachment of thermostatic valves or instruments to and from fluid-pressure service-pipes, to insure tight joints between the wall-plates to which such pipes are attached and the bases of the valves or instruments, and to avoid marring the walls of finished buildings.

It consists, essentially, of a Wall or coupling plate to which the service-pipes are attached, having one or more ports or openings adapted to register with a corresponding port or ports in the base of a thermostatic valve or instrument, and of certain other novel features in the construction and arrangement of thermostatic-valve attachments and connections hereinafter particularly described, and pointed out in the claims.

In the accompanying drawings like letters designate the same parts in the several figures.

Figure lis a longitudinal section on the line l l, Fig. 2, of a thermostatio valve or instrument and one form of my improved wall attachment and pipe connection specially vdesigned for application to walls before they are plastered. Fig. 2 is a front elevation of the same, portions of the thermostatic instrument being broken away and shown in section. Fig. 3 is an isolated face view of the wallplate. Fig. 4 is a similar View of a modified form of the wall-plate, specially designed for application to the face of a plastered or finished wall. Fig. 5 is a longitudinal section of the same as applied to a plastered wall, in connection with pipe-coupling plate and the base of a thermostatic instrument. Fig. G is a back view of a portion of the base of a thermostatic instrument to which my improvedesired shape, according to the arrangement of the ports and the shape of the base of the instrument with which it is to be used. For use in connection with a thermostatic valve or instrument of the kind shown, which is a form employed by me in heat-regulating apparatus, the plate A is formed with an aperture d for the reception of the coupling-plate to which the service pipe or pipes are attached and with a flange or lugs d' cd, projecting into said aperture to hold the coupling-plate in place therein. Itis also formed on its face with a flange CL2-around said aperture andwith bosses d3 and d4 d4, projecting outwardly, flush with the surface of the plaster, as shown in Fig. l. Said ilange and bosses serve as grounds for plasterin g over the plate A to the proper thickness.

B designates a coupling plate Vwhich is loosely fitted in the aperture a of the wallplate `A and is formed with couplings or sockets b Z9, as shown in Fig. 8, for the attachment thereto of service-pipes C C', as shown in Fig. 1. These sockets are connected by passages with ports b' and h2 (shown in Fig. 2) in the front face of said plate B. The passage connecting the supply-pipe C with the port b' is controlled by a valve D, the stem dof which is threaded in said plate B and, projecting outwardly therefrom through a stufling-box, is formed at its outer end with a key or wrench head. The plateB is loosely secured in the aperture d of the Wall-plate A by a screw b3 or other fastening, soas to admit of its adapting itself in position'to the valve base and'` its being clamped snugly thereto, as hereinafter explained, without bending, distorting, or disturbing the adjustments of the thermostatic instrument.

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E designates a thermostatic instrument comprising a three-way or supply and waste valve e, a fluid-pressure motor e', connected with and arranged to actuate said valve, and a thermostatic expansion-strip e2, controlling the operation of said motor. It also comprises a base F, which has in the back ports ff', arranged to register with the ports b and b2, respectively, in the face of the couplingplate B. Said ports communicate through separate passages with the chamber of valve e, and the port f also communicates through another passage with the expansion-chamber of motor e. A waste passage or opening is formed around the stem of the valve e, which, as shown in Fig. l, closes said waste-passage, leaving the passage between ports ff open and pipes C and C in communication with each other through said valve-chamber. The connection of the delivery-pipe C with the port f through coupling-plate B is shown in Fig. 5. When the valve e is in the opposite position from that shown in Fig. l, the wastepassage around its stem is open and communication between the supply-pipe C and the delivery-pipe C through said valve-chamber is closed, while communication between said delivery-pipe and the waste-passage is open. The expansion-chamber of the motor e is in constant communication through a supplypassage in the base F and the ports f and b with the pipe C when the valve D is open, and the expansion-strip e2, by closing and opening the exhaust port or passage, which is of larger area than said supply-passage, causes the filling or depletion of the expansion-chamber ot' said motor and the consequent shifting of the valve e. I do not wish to be understood, however, as limiting myself to the form or construction of the thermostatic instrument herein shown and described, as it has been selected merely for the purpose of explaining my improvements, which are applicable to various other forms and constructions.

The base F of the thermostatic instrument E is attached to the Wall-plate A by suitable clamping devices, such as screws f2 and ff, the screwf2 at the lower end of the base being threaded in the boss a3 of the wall-plate, and the screws f3 f3 at the upper end of said base being threaded in the coupling-plate B on opposite sides of the ports b and b2. Between said base and coupling-plate is interposed a gasket G, of suitable packing material, to insure tight joints around the ports b', b2, f, and f. Holes are formed through this gasket corresponding with the ports f f', and in these holes are inserted pieces g g of felt or other suitable porous material for tiltering the fluid-pressure medium passing through them and thereby preventing impurities from entering the expansion-chamber of the motor, the chamber of valve e, or the delivery-pipe C and thereby clogging or i11- terfering with the operation of said motor,

valve,or the apparatus supplied with the fluidpressure medium by said delivery-pipe C.

As hereinbefore stated, the screw b3 loosely connects the coupling-plate B with the wallplate A, so that when the base F of the instrument E is connected therewith said plate may be drawn by the screws f3 f3 tightly against said base or the interposed gasket,and thereby prevent leakage around the ports in said plate and base, without danger of bending or injuriously straining the base or disturbing the adjustments and proper operation of the thermostatic-valve mechanism.

Referring to Figs. -i and 5, A designates a modiiied form of the wall-plate designed to be attached to the face of the plaster or finished wall, as shown in Fig. 5. It may be conveniently stamped from sheet metal with a depressed margin around the aperture a to receive the coupling-plate B approximately iiush with its outer face, as seen in Fig. 5. In other respects the device is like that shown in Fig. l. In both cases the wall-plate is secured in place by nails or screws a5 a5, as shown in Figs. l and 5, in which I-I designates the lath, and I the plaster, of a wall to which the device is applied.

During the construction of abuilding which is to be equipped with apparatus of this character the service-pipes are placed in the walls and partitions before they are finished and the wall-plates A attached to the lath or plaster foundation in places where thermostaticvalve connections are to be made before the walls are plastered. In such cases the openings ct in the wall-plates are temporarily closed while the walls are being plastered and iinished by plain disks or plates corresponding with the coupling-plates B, so as to avoid smearing said coupling-plates and stopping their ports and passages with plaster and dirt. These temporary plates may also be used in connection with the wall-plates A to close the openings therein while the walls are being calcimined, painted, or otherwise iinished. When the walls are finished, the service-pipes C C are permanently secured in the sockets in the wall-plates B, suiiicient length or slack being allowed in said pipes forv this purpose. The coupling-plates are inserted and secured in the openings a by screws b3. The thermostatic instruments E need not necessarily be placed at all points where provision is made for them when the system is installed, but may be supplied whenever they are required after the system is put in service, the valves D being closed at all points where such instruments are not in use.

The wall-plates and pipe connections hereinbefore described not only afford convenient means of attaching thermostatic instruments to and removing them from nished walls and of connecting and disconnecting service-pipes therewith, but also avoid unsightly openings in the walls and the projection of the ends of the service-pipes therefrom at points where IOO IIO

thermostatic valves are not required and provided after the system is put in service. They are also of great convenience in making repairs and maintaining the apparatus in working order, as any thermostatic instrument that may be out of order can be readily removed and quickly replaced by another by taking out thev three screws f2 and f3 f3, which hold it to the wall-plate, the valve D being temporarily closed for this purpose. With both forms of the wall attachments shown and described covers, which are not shown, are provided for inclosing the thermostatic instruments and preventing injury thereto and unauthorized interference therewith. These covers are attached by two screws to the wallplates A A and can be readily removed. With the wall-plate A the cover is screwed to the bosses a4 a4, hereinbefore mentioned, which project outwardly flush with the face of the plaster.

I do not wish to be understood as limiting myself to the exact details of the wall attachment and pipe connection herein shown and described, as they may be variously modified within the intended scope of my invention. The coupling-plate B for the attachment of the service-pipes C Omay be formed integrally with the wall-plate, although, for the reasons hereinbefore stated, I prefer to make it separate and loosely connect it therewith.

I claiml. The combination with a Huid-pressure pipe or pipes for thermostatic purposes, of a wall-plate permanently attached to said pipe or pipes and'having ports in its face, and a thermostatic base and attachment for the utilization of fluid-pressure, said base having a port or ports to register with the ports of said wall-plate when brought face to face by suitable clamping devices, substantially as and for the purposes set forth.

2. A wall attachment and pipe connection for thermostatic valves consisting of a wallplate having provision for the permanent attachment thereto of a duid-pressure servicepipe, and a port in its outer face communieating with said pipe and arranged to register with the port in a thermostatic-valve base, substantially as and for the purposes set forth.

3. The combination with fluid-pressure supply and delivery pipes of a wall-plate permanently attached to said pipes and having in its outer face ports communicating with said pipes, a thermostatic connection with both supply and delivery pipes registering with said ports when clamped to said wall-plate, and a thermostatically-operated supply and waste valve in said thermostatic connection, substantially as and for the purposes set forth.

4. A wall attachment and pipe connection for thermostatic valves consisting of a plate adapted to be permanently attached to the wall of a building, a coupling-plate to which the service-pipe is attached adapted to be loosely secured in an opening of said wallplate and having a port in communication with said service-pipe adapted to register with a port in a thermostatic-valve base, substantially as and for the purposes set forth.

5. A wall attachment and pipe connection for thermostatic valves consisting of a wallplate provided with a pi pe-coupling and a port arranged to register with a port in the base of a thermostatic valve, and a valve for closing the passage between said pipe and the firstmentioned port, substantially as and for the purposes set forth.

6. A wall attachment and pipe connection for thermostatic valves consisting of a wallplate provided with means for the attachment of a service-pipe and in its face with a port arranged to register with a port in the base of a thermostatic valve, and a filter interposed between the ports of the valve-base and wallplate, substantially as and for the purposes set forth.

7. A wall attachment and pipe connection for thermostatic valves consisting of a wallplate adapted to be attached to the lath or plaster foundation of a wall and formed with an outwardly-projecting flange around an opening therein, and bosses for the attachment of a thermostatic-valve base, and a coupling-plate adapted to be loosely secured in the opening of said wall-plate, having provision for the attachment of service-pipes and provided in its facewith ports communicating with said pipes and arranged to register with ports in the base of a thermostatic valve, substantially as and for the purposes set forth.

8. A wall attachment and pipe connection for thermostatic valves consisting of a wallplate adapted to` be-permanently attached to the lath or plaster foundation of a wall and provided with couplings for the attachment of service-pipes, having in its face approximately flush with the surface of the plaster ports communicating with said couplings and arranged to register with ports in the base of the thermostatic valve, substantially as and for the purposes set forth.

9. A wall attachment and pipe connection for thermostatic valves consisting of a wallplate adapted to be permanently attached to the lath or plaster foundation of a wall, and formed on its outer face with bosses projecting outwardly flush with the surface of the plaster for the attachment of a thermostaticvalve base and cover, and provided on the back with couplings for the attachment of service-pipes and in its face, approximately flush with the surface of the plaster ports communicating with said couplings and arranged to register with ports in the valve-base, substantially as and for the purposes set forth.

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10. A wall attachment and pipe connection for thermostatic valves consisting of a wallplate for permanent attachment to a wall, formed with an opening, a coupling-plate for the permanent attachment of service-pipes adapted to be loosely secured in said opening, and having ports in its face communicating with the service-pipes, and a thermostaticmy own I ax my signature in presence of two Witnesses.

WARREN s. JOHNSON.

XVtnesses:

CHAS. L. Goss, M. L. EMERY. 

